Power Management
PMIC & Multifunction
Multi-Topology DC/DC
Space & Harsh Environment
Extended Temperature Plastic (H & MP)
Extended Temperature (H & MP) Switching Regulators
LTC3589/LTC3589-1/ LTC3589-2 - 8-Output Regulator with Sequencing and I2C
Features
- Triple I2C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A/1.2A, 1A/1.2A
- High Efficiency 1.2A Buck-Boost DC/DC Converter
- Triple 250mA LDO Regulators
- Pushbutton ON/OFF Control with System Reset
- Flexible Pin-Strap Sequencing Operation
- I2C and Independent Enable Control Pins
- Power Good and Reset Outputs
- Dynamic Voltage Scaling and Slew Rate Control
- Selectable 2.25MHz or 1.12MHz Switching Frequency
- Always-Alive 25mA LDO Regulator
- 8μA Standby Current
- 40-Pin 6mm × 6mm × 0.75mm QFN
- Click here for Freescale i.MX53 reference design and driver support information
Typical Application
Description
The LTC®3589 is a complete power management solution for ARM and ARM-based processors and advanced portable microprocessor systems. The device contains three step-down DC/DC converters for core, memory and SoC rails, a buck-boost regulator for I/O at 1.8V to 5V and three 250mA LDO regulators for low noise analog supplies. An I2C serial port is used to control enables, output voltage levels, dynamic voltage scaling, operating modes and status reporting. Differences between the LTC3589, LTC3589-1, and LTC3589-2 are summarized in Table 1.
Regulator start-up is sequenced by connecting outputs to enable pins in the desired order or programmed via the I2C port. System power-on, power-off, and reset functions are controlled by pushbutton interface, pin inputs, or I2C interface.
The LTC3589 supports i.MX53/51, PXA and OMAP processors with eight independent rails at appropriate power levels. Other features include interface signals such as the VSTB pin that simultaneously toggle up to four rails between programmed run and standby output voltages. The device is available in a low profile 40-pin 6mm × 6mm exposed pad QFN package.
| Options | LTC3589 | LTC3589-1 | LTC3589-2 |
|---|---|---|---|
| Power-On Inhibit Enable Delay | 1 second | 2ms | 2ms |
| Buck 2 & 3 Current Output | 1A | 1.2A | 1.2A |
| PGOOD Fault Timeout | Enabled Default, I2C Disable | Disabled by Default, I2C Enable | Disabled by Default, I2C Enable |
| PWR_ON to WAKE Delay | 50ms | 2ms | 2ms |
| LDO3 Vout | 1.8V | 2.8V | 2.8V |
| LDO4 Vout | 1.8V, 2.5V, 2.8V, 3.3V | 1.2V, 1.8V, 2.5V, 3.2V | 1.2V, 1.8V, 2.5V, 3.2V |
| LDO4 Vout | 1.8V, 2.5V, 2.8V, 3.3V | 1.2V, 1.8V, 2.5V, 3.2V | 1.2V, 1.8V, 2.5V, 3.2V |
| Default LDO4 Enable | LDO34_EN (Pin) or I2C | I2C Only | I2C Only |
| Wait to Enable Until Output < 300mV | Yes. Change with I2C | Yes. Change with I2C | No. Change with I2C |
| Insert 2.5K Discharge Resistor When Disabled | Yes when Wait to Enable Until Output < 300mV | Yes when Wait to Enable Until Output < 300mV | Always inserted when regulator disabled |
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
QFN-40
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LTC3589EUJ#PBF | QFN | 40 | E | $6.64 | $4.65 | View |
| LTC3589EUJ#TRPBF | QFN | 40 | E | $4.71 | View | |
| LTC3589EUJ-1#PBF | QFN | 40 | E | $6.64 | $4.65 | View |
| LTC3589EUJ-1#TRPBF | QFN | 40 | E | $4.71 | View | |
| LTC3589EUJ-2#PBF | QFN | 40 | E | $6.64 | $4.65 | View |
| LTC3589EUJ-2#TRPBF | QFN | 40 | E | $4.71 | View | |
| LTC3589HUJ#PBF | QFN | 40 | H | $8.14 | $5.70 | View |
| LTC3589HUJ#TRPBF | QFN | 40 | H | $5.76 | View | |
| LTC3589HUJ-1#PBF | QFN | 40 | H | $8.14 | $5.70 | View |
| LTC3589HUJ-1#TRPBF | QFN | 40 | H | $5.76 | View | |
| LTC3589HUJ-2#PBF | QFN | 40 | H | $8.14 | $5.70 | View |
| LTC3589HUJ-2#TRPBF | QFN | 40 | H | $5.76 | View | |
| LTC3589IUJ#PBF | QFN | 40 | I | $7.64 | $5.35 | View |
| LTC3589IUJ#TRPBF | QFN | 40 | I | $5.41 | View | |
| LTC3589IUJ-1#PBF | QFN | 40 | I | $7.64 | $5.35 | View |
| LTC3589IUJ-1#TRPBF | QFN | 40 | I | $5.41 | View | |
| LTC3589IUJ-2#PBF | QFN | 40 | I | $7.64 | $5.35 | View |
| LTC3589IUJ-2#TRPBF | QFN | 40 | I | $5.41 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1558A | LTC3589EUJ Demo Board | $250.00 | |
| DC1808A | LTC3589EUJ-1 Demo Board | 8 Output Regulator with Sequencing and I2C (req. DC590) | $250.00 | |
| DC1808B-A | LTC3589EUJ-1 Demo Board I 8-Output Regulator with Sequencing and I2C (req DC590) | $250.00 | |
| DC1808B-B | LTC3589EUJ-2 Demo Board I 8-Output Regulator with Sequencing and I2C (req DC590) | $250.00 | |
| Buy Now | |||
Companion Boards
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC590B | USB Serial Controller for Linear Technology QuikEval Demo Boards | $50.00 | |
| Buy Now | |||
Applications
- Handheld Instruments and Scanners
- Portable Industrial Devices
- Automotive Infotainment
- Medical Devices
- High End Consumer Devices
- Multirail Systems
- Supports Freescale i.MX53/51, Marvell PXA and Other Application Processors
People Who Viewed This Product Also Viewed
- LTC3115-1 - 40V, 2A Synchronous Buck-Boost DC/DC Converter
- LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management
- LTM4620 - Dual 13A or Single 26A DC/DC µModule Regulator
- LT8610 - 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
- LT3796/LT3796-1 - 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense
- LTC3630 - High Efficiency, 65V 500mA Synchronous Step-Down Converter
- LT3791 - 60V 4-Switch Synchronous Buck-Boost LED Driver Controller
- LTM2883 - SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
- LTC4370 - Two-Supply Diode-OR Current Balancing Controller
- LT1763 - 500mA, Low Noise, LDO Micropower Regulators
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
For resources and information on drivers for the LTC3589 in Windows, Linux and Android operating systems, download the LTC3589 Driver Software support documentation.
For more information on using the LTC3589 in conjunction with Freescale development tools and reference designs, please refer to:
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.